Phenoxyethylamine derivatives represented by the general formula (I):
wherein R₁ and R₅ represent lower-alkyl, R₂ and R₃, which may be the same or different, each represents hydrogen or lower-alkyl, or
represents a 5- or 6-membered ring system which may include nitrogen, oxygen or sulfur as a ring membered atom, R₄ represents hydrogen or lower-alkyl, and n represents an integer selected from 1 to 3, their optical isomers and pharmacologically-acceptable acid addition salts, which exhibit excellent α₁-blocking activity, a process for their preparation, pharmaceutical compositions thereof, and a method for the treatment of a subject afflicted with hypertension or dysuria by administrating such a compound, are all disclosed.
通式(I)代表的
苯氧基
乙胺衍
生物:
其中 R₁ 和 R₅ 代表低级烷基,R₂ 和 R₃ 可以相同或不同,各自代表
氢或低级烷基,或
代表可包括
氮、
氧或
硫作为环成员原子的 5 或 6 元环系统,R₄ 代表
氢或低级烷基,n 代表选自 1 至 3 的整数,它们的光学异构体和药理学上可接受的酸加成盐、本发明公开了具有优异α₁阻断活性的光学异构体和药理学上可接受的酸加成盐、其制备工艺、药物组合物,以及通过施用这种化合物治疗高血压或排尿困难患者的方法。